This paper discusses a single species growth model with three-stage structure(egg,immature and mature),which is a cannibalism species,that is,the mature preys on the egg,obtains sufficient conditions for the existence of globally asymptotically stable positive equilibrium,and puts forward the optimal harvesting policy of egg and mature population,respectively.

In this paper, we consider a Single Species Model with Three Stage Structure--hatch, immature and mature with mature populaton harvesting, we obtained sufficient conditions for the extistence of globally aymptotically stable positive equilibrium, and the optimal harvesting policy of matyre population is considered.

Choosing the maximum periodic biomass yield as the manage- ment objective,we investigate the optimal harvesting policies for periodic Gompertz ecosystem with impulsive harvest.

In this paper, we investigate the optimal harvesting problem for a class of linear time-dependent population system with diffusion,prove the existence of the optimal harvesting control, and obtain the necessary condition of optimality and the uniqueness of the optimal control.

Global dynamic state and optimal harvesting effort are obtained.

Study on mine fire comprehensive prevention of genetic algorithms optimal strategy;

Realization of optimal strategy for power system low-frequency and low-voltage load reduction;

Aim at the countermeasure between missiles and targets in space,the space simulation model based on differential games for SAM was established and its optimal strategy of resistance was deduced Moreover the adaptive critic neural networks arithmetic method was presented and used to calculated the simulation model.

In this paper we discuss the optimal problem on a discrete-time,single item, periodic review inventory system with yield and demand uncertainty, the main objective is to analyze how the uncertainty of yield rate and demand affect the optimal policy and cost in the system.

By using the dynamic programming method the optimal policy is obtained.

Revise the value coefficient of linear programming about production plan problem whose optimum solution had been obtained,and build mathematical model of cost minimization,give optimal policy that total revene increase the fixed value under the condition of unchangeable optimum base of original linear programming.